package com.hdit.guimei.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * @基本功能:
 * @ClassName: UserLoginValidateInterceptor
 * @Description: TODO
 * @Author: 李嘉明
 * @Date: 2021/1/18 15:28
 * @Version 1.0
 */
public class UserLoginValidateInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session =request.getSession();
        if(session.getAttribute("user_name")==null) {
            response.getWriter().write("您还没登录，请先登录！");
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
